Sample dependent promise data/record

dependentPromiseSample.js

/**
 * Dependent promise example
 */

// Employee records in the DB
const employee = [
  { id: 1, firstName: 'Ayo', lastName: 'Tunmise', dob: '1980-07-28' },
  { id: 2, firstName: 'Dayo', lastName: 'Owolabi', dob: '2000-03-08' },
  { id: 3, firstName: 'Michael', lastName: 'Ikechukwu', dob: '1997-01-31' },
  { id: 4, firstName: 'Hammed', lastName: 'Tukur', dob: '1900-08-07' },
  { id: 5, firstName: 'Bukola', lastName: 'Agbabiaka', dob: '2001-12-09' },
];

// Function to get employee records from the DB
const getAllEmployees = () => {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve(employee)
    }, 1000);
  })
};

// Employee next of kin records in the DB
const nextOfKin = [
  { id: 2, employeeId: 2, fullName: 'Ikoyi Obalende', email: '[email protected]' },
  { id: 3, employeeId: 3, fullName: 'Allen Ikeja', email: '[email protected]' },
  { id: 4, employeeId: 4, fullName: 'Oluyole Ife', email: '[email protected]' },
  { id: 5, employeeId: 5, fullName: 'Chinagoromu Ahmed', email: '[email protected]' },
  { id: 1, employeeId: 1, fullName: 'Mokola Ibadan', email: '[email protected]' },
]

// Function to get individual employee next of kin data from the DB
const getEmployeeNextOfKin = (employeeId) => {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve(nextOfKin.find(nextOfKin => nextOfKin.employeeId === employeeId));
    }, 1000);
  });
};